Fix calling build_backtrace too often #906
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Bug introduced in commit 4c32c53 from late last month. When unwinding the stack, call build_backtrace only when the exception object doesn't already have a .stack property, like how it was before commit 4c32c53. Fixes: quickjs-ng#904
bnoordhuis
commented
Feb 10, 2025
| Error.prepareStackTrace = function() { calls++ } | ||
| function f() { f() } | ||
| assertThrows(RangeError, f) | ||
| assert(calls, 0) |
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The fact the number of calls is zero instead of one is currently more or less by accident but in the case of stack overflow that's the desired behavior IMO (no JS calls) and I have an upcoming pull request that makes that intentional.
saghul
approved these changes
Feb 10, 2025
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Bug introduced in commit 4c32c53 from late last month.
When unwinding the stack, call build_backtrace only when the exception object doesn't already have a .stack property, like how it was before commit 4c32c53.
Fixes: #904